Study of a Depolarizing Resonance at the IUCF Cooler Ring

This research was sponsored by the National Science Foundation Grant NSF PHY-931478

Damage to the DNA of microorganisms from decay of incorporated sup125sup 125I and the relationship of DNA damage to lethal effects

Iodine-125 decays by electron capture and is known to cause severe molecular damage to small organic molecules via vacancy cascades. In an examination of the biological effects of this decay mode we have labelled coliphages T1 and T4, as well as E. coli, with $sup 125$I-5-iododeoxyuridine, which is incorporated into DNA in place of thymidine. Labelled organisms are generally stored in liquid nitrogen at -196$sup 0$C during decay and are periodically assayed for loss of viability and for breakage of DNA, using neutral and alkaline sucrose gradient sedimentation techniques. Briefly, our experiments have demonstrated drastic damage to DNA from the decay of incorporated $sup 125$I, as would be predicted from the data for small molecules. (auth

Über das Synthese-Problem für nilpotente Liesche Gruppen

Poguntke D. Über das Synthese-Problem für nilpotente Liesche Gruppen. Mathematische Annalen. 1984;269(4):431-467